Peach Tree,&#39; BURPEACHTHIRTY&#39;.

ABSTRACT

A new and distinct variety of peach tree ( Prunus persica ), which is denominated varietally as ‘Burpeachthirty’, and which produces an attractively colored yellow-white fleshed, clingstone peach which is mature for harvesting and shipment approximately October 7 to October 17 under the ecological conditions prevailing in the San Joaquin Valley of central California.

BOTANICAL DESIGNATION

The present invention relates to a new, novel, and distinct variety ofpeach tree, ‘Prunus persica’.

VARIETAL DENOMINATION

‘Burpeachthirty’.

BACKGROUND OF THE NEW VARIETY

The present variety of peach tree resulted from an on-going program offruit and nut tree breeding. The purpose of this program is to improvethe commercial quality of deciduous fruit and nut varieties, androotstocks, by creating and releasing promising selections of prunus,malus and juglans species. To this end we make both controlled andhybrid cross pollinations each year in order to produce seedlingpopulations from which improved progenies are evaluated and selected.

The seedling, ‘Burpeachthirty’ was originated by us, and selected from apopulation of seedlings growing in our experimental orchards which arelocated near Fowler, Calif. The seedlings, grown on their own roots,were derived from a cross using the ‘Fayette’ peach tree (unpatented,released by USDA ARS Fresno, Calif. in 1937), and which was used as theseed parent; and an unnamed yellow-fleshed clingstone peach which wasused as the pollen parent. After a period of stratification, the seedwas placed in the greenhouse by population, and then field planted fortree establishment, and ultimately to exhibit fruit for evaluation. Oneyellow fleshed peach seedling, which is the present variety, exhibitedespecially desirable characteristics, and was then designated as‘C9.053’. This seedling was marked for subsequent observation. After the1999 fruiting season, the new variety of peach tree was selected foradvanced evaluation and repropagation.

ASEXUAL REPRODUCTION

Asexual reproduction of this new and distinct variety of peach tree wasaccomplished by budding the new peach tree onto ‘Nemaguard’ Rootstock(un-patented). This was performed by us in our experimental orchardwhich is located near Fowler, Calif. Subsequent evaluations of theseasexually reproduced plants have shown those asexual reproductions runtrue to the original tree. All characteristics of the original tree, andits fruit, were established, and appear to be transmitted through thesesucceeding asexual propagations.

SUMMARY OF THE VARIETY

‘Burpeachthirty’ is a new and distinct variety of peach tree, which isconsidered of medium-large size, and which has a moderately vigorousgrowth characteristic. This new tree is also a regular and productivebearer of relatively large, firm, yellow-fleshed, clingstone fruit whichhave a very good flavor, and eating qualities. This new peach tree has amedium chilling requirement of approximately 650 hours, and furtherproduces relatively uniformly sized fruit throughout the tree's canopy.In addition to the foregoing, the fruit of the new peach also appears tohave good handling and shipping qualities. The ‘Burpeachthirty’ peachtree bears fruit which are typically ripe for commercial harvesting andshipment on approximately October 7 to October 17 under the ecologicalconditions prevailing in the San Joaquin Valley of central California.In relative comparison to the ‘Burpeacheighteen’ peach tree (U.S. PlantPat. No. 15,496), which is the closest known variety, the new variety ofpeach tree bears fruit that ripens approximately 2 weeks later. Inrelative comparison to the pollen parent, ‘Fayette’ peach tree, thepresent variety ripens approximately 3 weeks later.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawing, which is provided, is a color photograph ofthe new peach tree variety. The photograph depicts two whole maturefruit showing the top and bottom characteristics thereof, and one maturefruit bisected transversely below the equatorial plane, and whichreveals the flesh color, and stone characteristics thereof. The externalcoloration of the fruit as shown in the photograph is sufficientlymatured for harvesting and shipment. Additionally, the photographdisplays a sample vegetative shoot bearing typical leaves, and a typicalstone with the flesh removed. The colors in these photographs are asnearly true as is reasonably possible in a color representation of thistype. Due to chemical development, processing and printing, the leavesand fruit depicted in these photographs may, or may not, be accuratewhen compared to the actual specimen. For this reason, future colorreferences should be made to the color plates (Royal HorticulturalSociety, Fourth Edition, 2001) and descriptions provided, hereinafter.

NOT A COMMERCIAL WARRANTY

The following detailed description has been prepared to solely complywith the provisions of 35 U.S.C. § 112, and does not constitute acommercial warranty, (either expressed or implied), that the presentvariety will in the future display all the botanical, pomological orother characteristics as set forth, hereinafter. Therefore, thisdisclosure may not be relied upon to support any future legal claimsincluding, but not limited to, breach of warranty of merchantability, orfitness for any particular purpose, or non-infringement which isdirected, in whole, or in part, to the present variety.

DETAILED DESCRIPTION

Referring more specifically to the pomological details of this new anddistinct variety of peach tree, the following has been observed duringthe seventh fruiting season, and under the ecological conditionsprevailing at the orchards of the assignee which are located near thetown of Fowler, county of Fresno, state of Calif. All major color codedesignations are by reference to the R.H.S. Colour Chart (FourthEdition, 2001) provided by The Royal Horticultural Society of GreatBritain. Common color names are also occasionally used.

-   Tree:    -   -   Size.—Generally considered medium to medium-large in its            growth pattern as compared to other common commercial peach            cultivars ripening in the late season of maturity. The tree            of the present variety was pruned to a height of            approximately 270.0 cm. to about 310.0 cm. at commercial            maturity.        -   Width.—Approximately 280.0 cm.        -   Vigor.—Considered moderately vigorous. The present peach            tree variety grew from about 168.0 cm. to about 170.0 cm. in            height during the first growing season. The new variety was            pruned to a height of approximately 150.0 cm. during the            first dormant season, and primary scaffolds were then            selected for the desired tree structure.        -   Productivity.—Productive. Fruit set varies from more than            the desired crop load, to levels higher than desired levels,            when the new variety is grown in a suitable horticultural            zone, and under appropriate commercial nursery conditions.            The fruit set is spaced by thinning to develop the remaining            fruit into the desired market-sized fruit. The number of the            fruit set varies with the prevailing climatic conditions,            and the cultural practices employed.        -   Fruit bearing.—Regular. Fruit set has been more than            adequate during the previous years of observation, and            thinning was necessary during the past 10 years on both the            original seedling and on subsequent asexually reproduced            trees.        -   Tree form.—Upright, and pruned into a vase shape.        -   Density.—Considered moderately dense. It has been discovered            that pruning the branches from the center of the tree to            obtain a resulting vase shape allows for enhanced air            movement and appropriate amounts of sunlight to improve            fruit color, and renewal of fruiting wood throughout the            tree.        -   Hardiness.—The present tree was grown and evaluated in USDA            Hardiness Zone 9. The calculated winter chilling            requirements of the new tree is approximately 650 hours at a            temperature below 7.0 degrees C. The present variety appears            to be hardy under typical central San Joaquin Valley            climatic conditions.-   Trunk:    -   -   Diameter.—Approximately 18.5 cm in diameter when measured at            a distance of approximately 15.24 cm. above the soil level.            This measurement was taken at the end of the tenth growing            season.        -   Bark texture.—Considered moderately rough, with numerous            folds of papery scarfskin being present. Since bark            development and coloration change with advancing tree age            this characteristic varies with the tree vigor, age and            regional conditions. Therefore, this is not a dependable            descriptor of the new variety.        -   Lenticels.—Numerous flat, oval lenticels are present. The            lenticels range in size from approximately 3.0 millimeters            to about 5.0 mm. in width, and between about 1.0 and about            2.0 millimeters in height. The development and size of the            trunk lenticels can be influenced, to some degree, by the            ambient growing conditions, and are not, necessarily, a            dependable characteristic of this variety. As trees of this            variety mature, lenticels are present, but they are            generally covered by increasing layers of cork (mature bark)            and therefore become less apparent.        -   Lenticel color.—Considered an orange brown, (RHS            Greyed-Orange Group N167 B).        -   Bark coloration.—Variable, but it is generally considered to            be a greyed brown, (RHS Greyed-Brown Group N200 A). This            bark description was taken from trees in their seventh leaf            which have ruptured the scarf skin, and which also have            developed bark furrowing which is much more typical of the            bark of older trees. It should be noted that the coloration            of the bark is influenced, and varies, as the smoother,            darker background color approaches other bark features such            as the lenticels, and the initial fissures which form a            feature of the scarf skin development.-   Branches:    -   -   Size.—Considered medium for the variety.        -   Diameter.—Average as compared to other peach varieties. The            branches have a diameter of about 11.0 centimeters when            measured during the tenth year after grafting.        -   Surface texture.—Average, and appearing furrowed on wood            which is several years old.        -   Crotch angles.—Primary branches are considered variable, and            are usually growing at an angle of about 45 to about 57            degrees when measured from a horizontal plane. This            characteristic can be influenced, to some degree, by tree            vigor, rootstock and other cultural conditions.        -   Current season shoots.—Surface texture — Substantially            glabrous.        -   Internode length.—Approximately 2.1 cm.        -   Color of mature branches.—Grey brown, (RHS Brown Group N200            A).        -   Current seasons shoots.—Color. — Medium-light green, (RHS            Yellow-Green Group 143 B). The color of new shoot tips is            considered a bright and shiny green (RHS Green Group 144 B).            The vegetative shoot color can be significantly influenced            by plant nutrition, irrigation practices, and exposure to            sunlight, and therefore should not be considered a            consistent botanical characteristic of this new variety.-   Leaves:    -   -   Size.—Considered medium-large for the species. Leaf            measurements have been taken from vigorous, upright,            current-season growth, at approximately mid-shoot. It should            be understood that the leaf size is often influenced by            prevailing growing conditions, quality of sunlight, and the            location of the leaf within the tree canopy. For this            reason, leaf sizes can vary significantly based upon the            ambient and other cultural factors listed above, and are not            typically considered a dependable botanical descriptor.        -   Leaf length.—Approximately 155.0 to about 175.0 millimeters.        -   Leaf width.—Approximately 31.0 to about 39.0 millimeters.        -   Leaf base-shape.—The leaves generally exhibit equal marginal            symmetry relative to the leaf longitudinal axis.        -   Leaf form.—Lanceolate.        -   Leaf tip form.—Acuminate.        -   Leaf color.—Upper Leaf Surface — Dark green, (approximately            RHS Green Group 135 A).        -   Leaf texture.—Glabrous.        -   Leaf color.—Lower Leaf Surface — light to medium green,            (approximately RHS Green Group 139 B).        -   Leaf venation.—Pinnately veined.        -   Mid-vein.—Color — Considered a light, yellow-green,            (approximately RHS Yellow-Green Group N144 C) in the early            to mid-period of the growing season.        -   Leaf margins.—Gently undulating. Form — Considered crenate.            Uniformity — Considered generally uniform.        -   Leaf petioles.—Form — Considered canaliculated, and having a            more pronounced trough when viewed from the dorsal aspect.            The petiole margin is considered rounded when viewed from            the ventral aspect. Size — Considered medium-small for the            species. Length — About 7.0 to about 11.0 mm. Diameter —            About 1.5 to about 2.5 mm. Color — Light yellow green,            (approximately RHS Yellow-Green Group 144 B).        -   Leaf glands.—Size — Considered small for the species;            approximately 1.0 mm. in length; and about 1.0 mm. in            height. Number — Generally one to two glands per marginal            side are found. Observations of more than two glands per            marginal side are more uncommon. Type — Glands located at            the base of the leaf are predominantly reniform in shape. An            additional one to two, or occasionally more glands, which            appear more globose, and stalked, are often present at the            basal margin of the leaf petiole as well. Color — Considered            a medium, light brown, approximately (RHS Grey-Brown Group            199 B). Typically the coloration of the glands darkens, and            occasionally begins to desiccate during, and thereafter, the            mid-late growing season.        -   Leaf stipules.—Size — Medium large for this variety. Number            — Typically 2 per leaf bud, and up to 6 per shoot tip. Form            — Lanceolate in form, and having a serrated marginal edge.            Color — Green, (approximately RHS Green Group 139 B) when            young, but graduating to a brown color, (approximately RHS            Greyed-Orange Group 165 A) with advancing senescence. The            leaf stipules are generally considered to be early            deciduous.-   Flower buds:    -   -   Hardiness.—No winter injury (bud death) has been noted            during the last several years of observation in the central            San Joaquin Valley. The new variety of peach tree has not            been intentionally subjected to drought, cold or heat            stress, and therefore this information is not available.        -   Flower bud.—Size — Variable, and dependent on the state of            maturity. The flower buds as described were observed            approximately 7 days prior to bloom.        -   Flower bud.—Length — Approximately 13.0 millimeters.        -   Flower bud.—Diameter — Approximately 9.5 millimeters.        -   Flower bud surface texture.—Pubescent.        -   Flower bud orientation.—Considered appressed, but appear            less so as the blossoms near opening.        -   Bud scale color.—Approximately RHS Greyed-Purple 187 A.-   Flowers:    -   -   Date of first bloom.—Observed on Feb. 26, 2012.        -   Blooming time.—Considered average in relative comparison to            other commercial peach cultivars grown in the central San            Joaquin Valley. The date of full bloom was observed on Mar.            5, 2012. The date of full bloom varies slightly with            climatic conditions, and prevailing cultural practices.        -   Duration of bloom.—Approximately 7 days. This particular            characteristic varies slightly with the prevailing climatic            conditions.        -   Flower class.—Considered a perfect flower, complete and            perigynous.        -   Flower type.—The variety is considered to have a showy type            flower.        -   Flower size.—Considered medium. The flower diameter at full            bloom, is approximately 29.0 to 32.0 millimeters.        -   Bloom quantity.—Considered abundant.        -   Flower bud frequency.—Normally two flower buds appear per            node, occasionally one flower bud per node is observed.        -   Petal size.—Generally considered medium for the species.            Petal Length — Approximately 13.0 to 18.0 millimeters. Petal            Width — Approximately 12.0 to 15.0 millimeters.        -   Petal form.—Considered broadly ovate.        -   Petal count.—Nearly always 5.        -   Petal texture.—Glabrous.        -   Petal color.—Considered a light pink at the popcorn stage,            (RHS Red Group 49 B), and darkening with advanced            senescence, and the exposure of sunlight, to a medium-dark            pink, (RHS Red-Purple 64 D).        -   Fragrance.—Slight.        -   Petal claw.—Form — The claw is considered truncate, and is            generally medium-small when compared to other varieties.            Length — Approximately 7.0-8.0 millimeters. Width —            Approximately 6.0 to 8.0 millimeters.        -   Petal margins.—Generally considered variable, from nearly            smooth to moderately undulate and ruffled, especially            apically.        -   Petal apex.—Generally, the petal margin is entire at tip.        -   Flower pedicel.—Length — Considered medium-long with an            approximate length of about 0.5 to about 1.0 millimeters.            Diameter — Approximately 1.0 millimeters. Color — A medium            brown, approximately (RHS Grey-Brown Group N199 D). Surface            — Glabrous.        -   Floral nectaries.—Color — Considered a deep orange            (approximately RHS Greyed-Orange Group N172 B).        -   Calyx.—Surface Texture — Generally glabrous. Color — A dull            red, (approximately RHS Greyed-Purple Group 183 A).        -   Sepals.—Surface Texture — The surface has a short, fine            pubescent texture. Number — 5 sepals Size — Average, and            ovate in form. Sepal Length — Approximately 4.0 to 6.0            millimeters. Sepal Width — Approximately 4.0 to 6.0            millimeters. Sepal Shape — Generally obovate. Sepal Margin —            Considered smooth and entire. Sepal Color — A dull, magenta,            (approximately RHS Greyed-Red Group 181 C).        -   Anthers.—Generally — Average in size. Color — Red to            reddish-orange when viewed dorsally and prior to dehiscence,            (approximately RHS Greyed-Red Group 179 A).        -   Pollen production.—Pollen is abundant and has a yellow            color, (approximately RHS Yellow-Orange Group 17 B).        -   Fertility.—Self-fertile.        -   Filaments.—Size — Approximately 13.0 to 16.0 millimeters in            length. Color — Considered white to a pinkish-white, (RHS            Red Purple Group 62 D).        -   Pistil.—Number — Usually one, and only rarely more than one.            Generally — Large in size. Length — Approximately 17.0 to            about 19.5 millimeters in length including the ovary. Color            — Considered a very pale green, (approximately RHS            Yellow-Green Group 150 D). Surface Texture — The variety has            a long pubescent pistil.-   Fruit:    -   -   Maturity when described.—Firm ripe condition (shipping            ripe).        -   Date of first picking.—Approximately Oct. 7, 2012 Date of            last picking — Oct. 17, 2012. The date of harvest can vary            slightly with the prevailing climatic conditions and the            current cultural practices.        -   Size.—Generally — Considered large, and uniform.        -   Average cheek diameter.—Approximately 70.0 to about 92.0            millimeters.        -   Average axial diameter.—Approximately 68.0 to about 87.0            millimeters.        -   Typical weight.—Approximately 235.0 grams. This            characteristic is quite dependent upon the prevailing            cultural practices, and therefore is not particularly            distinctive of the new variety.        -   Fruit form.—Generally — Considered globose. The fruit is            generally uniform in symmetry.        -   Fruit suture.—Some slight stitching exists along the suture            line.        -   Suture.—Color — Generally, the fruit appears blushed to the            same degree as the skin, (approximately RHS Red Group 46 B).        -   Ventral surface.—Form — Quite even, and uniform in            appearance, when it is viewed from the lateral, sutural            plane.        -   Apex.—Shape — Rounded to slightly retuse.        -   Base.—Shape — Generally smooth.        -   Stem cavity.—Generally — It extends in a rounded circular            form which is generally considered uniform. The stem cavity            is rounded but slightly extended toward the suture. The            average depth of the stem cavity is about 8.0-10.0 mm. The            average width of the stem cavity is about 30.0 mm. The            average length of the stem cavity, when measured in the            suturial plane. is about 55.0 mm.        -   Fruit skin.—Thickness — Considered medium in thickness, and            tenacious to the flesh. Surface Texture — Short, fine and            pubescent. The pubescence is moderately abundant. Taste —            Non-astringent. Tendency to crack — Not observed in the            previous years of observation and evaluation.        -   Fruit skin color.—Blush Color — Generally speaking, a red            blush exists on a majority of the skin of the fruit            (approximately RHS Red Group 46 B), and is more typically            present on the portions of the fruit facing the sunlight.            The blush of the fruit typically covers approximately            35%-45% of the fruit skin surface. The percentage of the            blush on the fruit skin surface can vary, and is generally            dependent upon the fruit's exposure to direct sunlight;            specific fruit maturity; and also the prevailing ecological            and cultural conditions under which the fruit was grown.        -   Ground color.—Yellow, (approximately RHS Yellow Group 13 C).            The ground color of the fruit can vary significantly based            upon the maturity of the fruit when this measurement is            taken.        -   Fruit stem.—Size — Medium in length, approximately 6.0 to            about 8.0 millimeters. Diameter — Approximately 2.0 to about            3.0 millimeters. Color — Pale yellow-green, (approximately            RHS Yellow-Green Group N144 C).        -   Fruit flesh.—Ripening — Considered even. Texture — Firm,            juicy and dense. Considered firm yet non-melting. Fibers —            Present but not prominent. Aroma — Slight. Eating Quality —            Considered very good. Flavor — Considered very sweet, and            with moderate acidity. The flavor is considered both            pleasant and balanced. Juice Production — Moderate. Brix —            About 14.50 to 17.0 degrees. This characteristic varies            slightly with the number of fruit per tree; the maturity of            fruit when harvested; the prevailing cultural practices; and            the ambient climatic conditions. Flesh Color — It is            considered a yellowed white, (approximately RHS Yellow Group            11 A).-   Stone:    -   -   Type.—Considered a clingstone.        -   Size.—It is generally considered to be medium-small for the            variety. The stone size varies significantly depending upon            the tree vigor, the crop load, and the prevailing growing            and cultural conditions under which the tree was grown.        -   Length.—Average, about 29.0 to about 31.0 millimeters.        -   Width.—Average, about 22.0 to about 26.0 millimeters.        -   Diameter.—Average, about 18.0 to about 20.0 millimeters.        -   Form.—Roughly ovoid.        -   Stone base.—Shape — The stone is considered shortly            attenuate.        -   Apex.—Shape — The stone exhibits a slight to prominently            acute apex.        -   Stone surface.—Surface Texture — Considered irregularly            furrowed toward the apex. Further, more pitting exists in            the mid-portion of the stone (laterally), and is more common            toward the base. Ridges — Ridging is generally more            prominent, and is usually oriented parallel, and laterally            relative at the ventral and dorsal margins. Ventral Edge —            The ventral edge is generally considered troughed with three            substantial grooves that converge apically. Dorsal Edge —            Shape — Generally considered even. The folds of the surface            ridges appearing on the external margins often end gently            along the suture.        -   Stone color.—The color of a mature, dry stone is generally            considered a dull brown, approximately (RHS Greyed-Orange            Group 177 A).        -   Tendency to split.—Splitting has rarely been noted.        -   Kernel.—Length — Approximately 19.0-21.0 millimeters. Width            — Approximately 13.0-15.0 millimeters. Thickness — 5.0-6.0            millimeters. Size — The kernel is considered medium in size.            Further the kernel is gelatinous and immature when the fruit            is fully mature, and ready for harvesting and shipment. Form            — Considered generally ovoid. Pellicle — Slightly pubescent.            Color — A dark tan (RHS Greyed-Orange Group 165 B).        -   Use.—The present variety ‘Burpeachthirty’ is considered to            be a peach tree of the late season of maturity, and which            produces fruit which are considered to be firm, attractively            colored, and which are useful for both local and long            distance shipping.        -   Keeping quality.—Appears excellent. The fruit of the present            variety has stored well for periods of up to 30 days after            harvest at 1.0 degree Celsius.        -   Shipping quality.—Good. The fruit of the new peach tree            variety showed minimal bruising of the flesh or skin damage            after being subjected to normal harvesting and packing            procedures.        -   Resistance to insects and disease.—No particular            susceptibilities were noted. The present variety has not            been intentionally tested to expose or detect any            susceptibilities or resistances to any known plant, fruit            diseases, insect, frost, winter injury or other            environmental factors.

Although the new variety of peach tree possesses the describedcharacteristics when grown under the ecological conditions prevailingnear Fowler, Calif., in the Central part of the San Joaquin Valley ofCalifornia, it should be understood that variations of the usualmagnitude, and characteristics incident to changes in growingconditions, fertilization, nutrition, pruning, pest control, frost,climatic variables and changes in horticultural management are to beexpected.

Having thus described and illustrated our new variety of peach tree,what we claim is new, and desire to secure by plant Letters Patent is:1. A new distinct variety of peach tree, substantially as illustratedand described, and which is characterized principally as to novelty byproducing an attractively colored yellow-white fleshed, clingstone peachwhich is mature for harvesting and shipment approximately October 7 toOctober 17 under the ecological conditions prevailing in the San JoaquinValley of central California.